Minimum distance betwen Gates

I have installed several AFCAD files and in some instances I observe that parked aircraft, when attempting to turn and taxi out get stuck when parked next to my own aircraft.Question no.1Is there a way to determine what should be the minimum distance between parking gates, depending on their set radii, so that any aircraft eligible to park in these Gates will not have a problem taxi-ing out?Same goes for some taxiways which are passing mear the Gates: I have observed that sometimes the taxi-ing aircraft will stop on the taxiway, and will not move until my parked aircraft moves away.Question no.2What is the minimum distance radius that an AI aircrfat must have in order to keep moving? How much more room than half of its span does it need?Stamatis